NCTI FINAL EXAM PROGRESSION
WITH COMPLETE QUESTION AND
ANSWER
What uses the 2.4-GHz band and runs at 54 Mbps? -
<<<ANSWER>>>802.11g
What is one reason why broadband cable operators
install fiber-optic cable in stages instead of changing
the infrastructure all at once? -
<<<ANSWER>>>Changing the infrastructure all at
once would cause too many service disruptions.
What is the difference between the fiber-to-the-node
(FTTN) and fiber-to-the-curb (FTTC) topologies? -
<<<ANSWER>>>An FTTC is allowed a smaller
,number of RF amplifiers between the optical fiber
and the customer premises.
Which of these components is used in a passive
optical network (PON)? - <<<ANSWER>>>Optical
splitters.
Which type of star topology used in a passive optical
network (PON) places the PON splitters into fiber
access terminal (FAT) located deep in the network
and closer to the customer premises than the
centralized split? - <<<ANSWER>>>Distributed
star.
Which element of a passive optical network (PON)
uses a Bragg grating filter? -
<<<ANSWER>>>Optical line terminal (OLT).
Which element of a passive optical network (PON)
uses patch panels? - <<<ANSWER>>>Optical
distribution network (ODN).
What is it about radio frequency over glass (RFoG)
that made broadband cable operators envision using
it to make a seamless transition from the legacy
,hybrid fiber/coax (HFC) architecture over to a
gigabit-capable passive optical network (GPON) or
Ethernet passive optical network (EPON)? -
<<<ANSWER>>>RFoG can operate in parallel with
GPON or EPON, which eliminates the need for any
downtime during the transition.
How are optical splitters used in the forward path? -
<<<ANSWER>>>In the forward path, optical
splitters are used as passive branching devices that
divide an optical signal across multiple output fibers.
Which of the following describes a fiber pigtail? -
<<<ANSWER>>>Fiber-optic cable with pre-
connectorized ends.
Heat shrink tubing is installed over the fusion-splice
to strengthen and protect it. When should the heat
shrink be installed on the fiber? -
<<<ANSWER>>>Before stripping the plastic
coating from the fiber.
Which of the following are statements of true
axioms? - <<<ANSWER>>>When A = C and B =
C, then A = B because both are equal to C, which
, supports the axiom: Quantities equal to the same
quantity are equal to each other.
Simplify and solve the equation: If E = IR then I = ?
- <<<ANSWER>>>E/R
The square of 7 = - <<<ANSWER>>>49
The square root of 81 = - <<<ANSWER>>>9
0.00004 = ______ x 10 to the power of ______. -
<<<ANSWER>>>4, -5
(75 x 10 to the power of 3) + (25 x 10 to the power
of 4) = - <<<ANSWER>>>32.5 x 10 to the power of
4
10 to the power of -3 has a metric prefix of ______.
- <<<ANSWER>>>Milli
(480 x 10 to the power of -5) divided by (60 x 10 to
the power of -3) = - <<<ANSWER>>>8 x 10 to the
power of -2
WITH COMPLETE QUESTION AND
ANSWER
What uses the 2.4-GHz band and runs at 54 Mbps? -
<<<ANSWER>>>802.11g
What is one reason why broadband cable operators
install fiber-optic cable in stages instead of changing
the infrastructure all at once? -
<<<ANSWER>>>Changing the infrastructure all at
once would cause too many service disruptions.
What is the difference between the fiber-to-the-node
(FTTN) and fiber-to-the-curb (FTTC) topologies? -
<<<ANSWER>>>An FTTC is allowed a smaller
,number of RF amplifiers between the optical fiber
and the customer premises.
Which of these components is used in a passive
optical network (PON)? - <<<ANSWER>>>Optical
splitters.
Which type of star topology used in a passive optical
network (PON) places the PON splitters into fiber
access terminal (FAT) located deep in the network
and closer to the customer premises than the
centralized split? - <<<ANSWER>>>Distributed
star.
Which element of a passive optical network (PON)
uses a Bragg grating filter? -
<<<ANSWER>>>Optical line terminal (OLT).
Which element of a passive optical network (PON)
uses patch panels? - <<<ANSWER>>>Optical
distribution network (ODN).
What is it about radio frequency over glass (RFoG)
that made broadband cable operators envision using
it to make a seamless transition from the legacy
,hybrid fiber/coax (HFC) architecture over to a
gigabit-capable passive optical network (GPON) or
Ethernet passive optical network (EPON)? -
<<<ANSWER>>>RFoG can operate in parallel with
GPON or EPON, which eliminates the need for any
downtime during the transition.
How are optical splitters used in the forward path? -
<<<ANSWER>>>In the forward path, optical
splitters are used as passive branching devices that
divide an optical signal across multiple output fibers.
Which of the following describes a fiber pigtail? -
<<<ANSWER>>>Fiber-optic cable with pre-
connectorized ends.
Heat shrink tubing is installed over the fusion-splice
to strengthen and protect it. When should the heat
shrink be installed on the fiber? -
<<<ANSWER>>>Before stripping the plastic
coating from the fiber.
Which of the following are statements of true
axioms? - <<<ANSWER>>>When A = C and B =
C, then A = B because both are equal to C, which
, supports the axiom: Quantities equal to the same
quantity are equal to each other.
Simplify and solve the equation: If E = IR then I = ?
- <<<ANSWER>>>E/R
The square of 7 = - <<<ANSWER>>>49
The square root of 81 = - <<<ANSWER>>>9
0.00004 = ______ x 10 to the power of ______. -
<<<ANSWER>>>4, -5
(75 x 10 to the power of 3) + (25 x 10 to the power
of 4) = - <<<ANSWER>>>32.5 x 10 to the power of
4
10 to the power of -3 has a metric prefix of ______.
- <<<ANSWER>>>Milli
(480 x 10 to the power of -5) divided by (60 x 10 to
the power of -3) = - <<<ANSWER>>>8 x 10 to the
power of -2
